Head for acid-containing retorts.



Patented Jan. I, l90l.

N. PATTERSON. HEAD FOR ACID CONTAINING RE'TORTS.

' (Application filed May 29. 1900.

(Nu Model.)

61535675077, I x7z9im- Units STATES PATENT Ornrcn.

HEAD FOR ACID-:CONTAINING RETORTS.

BPECIFICATION forming part of Letters Patent No. 664,891, dated January1, 1901.

Application filed May 29, 1900. Serial No. 18A43. (No model.)

To 6065 whom it may concern:

Be it known that I, NEIL PATTERSON, a citizen of the United States,residing at West Line, in the county of McKean and State ofPennsylvania, have invented a new and useful Head for Acid- ContainingRetorts, of which the following is a specification.

This invention relates to acid-containing retorts-for instance, such asare used in the manufacture of wood-alcohol. In such retorts the acid isvery strong and soon destroys the heads of the bolts in the heads of theretorts and also destroys the joints between the head and the doortherein, thereby resulting in a leakage of the contents of the retort.In view of this difficulty the present invention has been designed toobviate the leakage of the joints and to protect the bolts and also toprovide an improved form of removable packing for the joints, so thatthey may be conveniently replaced when affected by the acid.

With these and other objects in view the present invention consists inthe combination and arrangement of parts, as will be hereinafter morefully described, shown in the accompanyin g drawings,and particularlypointed out in the appended claims, it being understood that changes inthe form, proportion, size, and minor details may be made within thescope of the claims without departing from the spirit or sacrificing anyof the advantages of the invention.

In the drawings, Figure l is an elevation of the inner side of the headof a retort constructed in accordance with the present invention. Fig. 2is a transverse sectional View thereof.

Corresponding parts are designated by like characters of reference inboth figures of the drawings.

Referring to the drawings, 1 designates a plate forming a head ofcircular or other shape, which is provided with a marginal series ofperforations 2 for the reception of fastenings,

whereby the head may be secured to the shell of an acid-containingretort of any character whatsoever. Provided centrally of the head is anopening 3 of any preferred shape,whereby access may be had to theinterior of the retort. This opening is normally closed by means of adoor 4, which is hinged to the outer side of the head by means of anycharacter of hinge 5, as shown in Fig. 2 of the drawings, andadapted tofold into the opening, so as to be flush with the inner side of thehead. At the inner side of the opening in the head is aninwardly-directed flange 6,which is formed by means of a ring, removablysecured to the inner side of the head by means of suitable fastenings,such as bolts 7, which have the nuts 8 thereof located upon the outerside of the head. Held between the ring and the adjacent face of thehead is a packing-ring 9 of asbestos or other suitable material, so asto form a tight joint between the ring and the head.

The door is designed to close against the marginal flange as a stop tolimit the inward movement thereof and is provided with a packing-ring 10to fit against the flange 6,- and thus form a tight joint between thedoor and the flange. To hold the packing against the inner face of thedoor, there is provided a clamping metal ring 11, which bears againstthe packing and is held in place by means of bolts 12, which passthrough the ring and the door and have their nuts located upon the outersides thereof. their heads protected by means of caps or enlargements13, cast upon the same, so as to provide abnormally large heads, whichare not so soon eaten away by the acid.

From the foregoing description it will be seen that the presentinvention provides an exceedingly simple and effective head for thereofare madelacid-tight, and the packing and retaining rings may be fittedin place through the opening in the head Without removing the latter orthe door; also, the bolts are provided with protective caps or heads toprevent the former from being destroyed by the acid, and some of thebolts which secure the metal rings in place may also be employed toconnect the hinges to the head and to the door.

In practice I prefer to place the bolts within the molds that form therespective rings 6 and 11, so that the bolts maybe cast thereto, theenlarged heads or protective caps 13 being cast at the same time.

What is claimed is- 1. A head for acid-containing retorts, having anopening therein,an inwardly-projecting All of the bolts haveacid-containing retorts, in which the joints marginal flange at theinner side of the opening, an outer door hinged to the head and closinginto the opening and against the flange, one or more packing-rings, andremovable bolt-fastenings therefor, said bolts having acid-protectedheads located upon the inner side of the retort, and nuts upon the outerside of the retort.

2. In an acid-containing retort, a head-plate having an openingtherein,a removable flange secured to the inner side of the head-plateand overlapping the edge of the opening, a packing removably heldbetween the flange and the head-plate, and also terminating at the edgeof the opening, a door hinged at one side of the opening and to thehead-plate, and swinging into the opening and against the flange, apacking-ring applied to the inner side of the door and extending to theouter marginal edge thereof and fitting against the exposed portion ofthe flange on the head, a removable metallic ring clamping thepacking-ring between the door and said metallic ring, andbolt-fastenings, some of which connect the flange to the head-plate, andothers connect the metallic ring to the door, all of the fasteningshaving abnormally-enlarged acid-protected heads upon the inner side ofthe retort, and nuts upon the outer side thereof; In testimony that Iclaim the foregoing as my own I have hereto affixed my signature in thepresence of tWo Witnesses.

NEIL PATTERSON. Witnesses:

THos. J. BUTLER, LYNN D. PUTNAM.

